I enjoyed The Last Jedi, but I'm very happy that J.J. Abrams is going to be doing the final film in this trilogy.
My understanding is Johnson didn't collaborate with Abrams much to push the overall story in a certain direction, and you can very much tell. If I watched a whole trilogy by Rian Johnson, I would probably be disappointed if this film is an indication of his view in regards to what Star Wars is. Since Abrams doesn't have to commit to most of the issues Johnson put in place, this movie might pass for me. Now, if Abrams doesn't correct the misdirection (just my opinion) put in place in TLJ, I'll end up disappointed in the end. So, a lot is riding on the next film for me. If Abrams can close the book, so to speak, this will become a very well done middle piece.
That said, I'm not optimistic at all for Johnson's stand alone trilogy now. Although TLJ might end up as a good middle piece, for me, it'll be because of Abrams, not Johnson. Since he intentionally made issues laid out previously by Abrams to ultimately "mean nothing", it makes me question the motive in his stories. His stories seem like they would be boring and shallow, almost without heart. Had Abrams not laid out such a fantastic direction in TFA, I think TLJ would have been terrible. Sure, a lot that he did could lead things in "a new direction", but is that good? I don't know. Probably not. I'm not saying that I won't see his new trilogy in theaters, but I will be much more hesitant now than I would have been before I saw TLJ. Maybe he'll surprise me, I hope he does, but he had a free pass until now. Just because they'll slap the Star Wars logo onto his trilogy doesn't mean I will watch it, at least right away. He'll have to earn that viewing. I don't want to see random characters doing random things "just because". If that's his approach, he will be in the same category as Michael Bay in my eyes.
Since his hands are now off this trilogy now, I'm hopeful it'll end up well. Abrams usually does a great job, so I'm optimistic still about the future of SW.